Inital Release: OTP 24.0
Git Tag: OTP-24.0
Date: 2021-02-24
Trouble Report Id: OTP-10391, OTP-13126, OTP-14485, OTP-14601,
OTP-14646, OTP-14647, OTP-14650, OTP-14700,
OTP-14793, OTP-15107, OTP-15523, OTP-16334,
OTP-16517, OTP-16560, OTP-16607, OTP-16611,
OTP-16653, OTP-16656, OTP-16678, OTP-16686,
OTP-16687, OTP-16698, OTP-16703, OTP-16706,
OTP-16712, OTP-16718, OTP-16720, OTP-16722,
OTP-16723, OTP-16724, OTP-16725, OTP-16749,
OTP-16750, OTP-16788, OTP-16793, OTP-16800,
OTP-16809, OTP-16811, OTP-16814, OTP-16822,
OTP-16824, OTP-16865, OTP-16867, OTP-16877,
OTP-16878, OTP-16879, OTP-16880, OTP-16881,
OTP-16882, OTP-16883, OTP-16884, OTP-16885,
OTP-16898, OTP-16905, OTP-16910, OTP-16926,
OTP-16936, OTP-16940, OTP-16943, OTP-16944,
OTP-16945, OTP-16947, OTP-16949, OTP-16950,
OTP-16952, OTP-16957, OTP-16963, OTP-16964,
OTP-16968, OTP-16970, OTP-16971, OTP-16974,
OTP-16980, OTP-16981, OTP-16986, OTP-16987,
OTP-16995, OTP-17001, OTP-17005, OTP-17007,
OTP-17014, OTP-17015, OTP-17020, OTP-17023,
OTP-17024, OTP-17028, OTP-17044, OTP-17049,
OTP-17051, OTP-17057, OTP-17059, OTP-17077,
OTP-17078, OTP-17084, OTP-17092, OTP-17095,
OTP-17103, OTP-17104, OTP-17105, OTP-17106,
OTP-17117, OTP-17118, OTP-17120, OTP-17121,
OTP-17122, OTP-17123, OTP-17131, OTP-17133,
OTP-17140, OTP-17153, OTP-17156, OTP-17162,
OTP-17166, OTP-17168, OTP-17170, OTP-17171,
OTP-17172, OTP-17175, OTP-17177, OTP-17180,
OTP-17181, OTP-17183, OTP-17189, OTP-17192,
OTP-17198, OTP-17199, OTP-17201, OTP-17206,
OTP-17207, OTP-17210, OTP-17213, OTP-17214,
OTP-17216, OTP-17217, OTP-17219
Seq num: ERL-1113, ERL-1281, ERL-1308, ERL-1313,
ERL-1332, ERL-1335, ERL-1348, ERL-1354,
ERL-1367, ERL-1378, ERL-1379, ERL-1380,
ERL-1381, ERL-1430, ERL-1431, ERL-1450,
ERL-1480, ERL-892, GH-4033, GH-4360, GH-4473,
GH-4493
System: OTP
Release: 24
Application: asn1-5.1, common_test-1.19.2, compiler-8.0,
crypto-5.0, debugger-5.1, dialyzer-4.4,
edoc-1.0, eldap-1.2.9, erl_docgen-1.1,
erl_interface-5.0, erts-12.0, et-1.7,
ftp-1.1, inets-7.4, jinterface-1.12,
kernel-8.0, megaco-4.0, mnesia-4.18.2,
observer-2.9.6, odbc-2.13.3, os_mon-2.7,
parsetools-2.3, reltool-0.9,
runtime_tools-1.15.2, sasl-4.1, snmp-5.7.4,
ssh-4.11, ssl-10.3, stdlib-3.15,
syntax_tools-2.5, tools-3.5, wx-2.0,
xmerl-1.4
Predecessor: OTP
Check out the git tag OTP-24.0, and build a full OTP system including
documentation.
---------------------------------------------------------------------
--- HIGHLIGHTS ------------------------------------------------------
---------------------------------------------------------------------
OTP-15523 Application(s): ftp
Related Id(s): OTP-15352, PR-1968
Add support for FTPES (explicit FTP over TLS).
OTP-16611 Application(s): kernel
Related Id(s): OTP-16749
A compatibility adaptor for gen_tcp to use the new
socket API has been implemented (gen_tcp_socket). Used
when setting the kernel application variable
inet_backend = socket.
OTP-16686 Application(s): debugger, erts, kernel, stdlib
Extended error information for failing BIF calls as
proposed in EEP 54 has been implemented.
When a BIF call from the Erlang shell fails, more
information about which argument or arguments that were
in error will be printed. The same extended error
information will by proc_lib, common_test, and qlc when
BIF calls fail.
For applications that wish to provide the same extended
error information, there are new functions
erl_error:format_exception/3 and
erl_error:format_exception/4.
There is a new error/3 BIF that allows applications or
libraries to provide extended error information in the
same way for their own exceptions.
OTP-16706 Application(s): compiler
Related Id(s): ERL-1281
Variables bound between the keywords 'try' and 'of' can
now be used in the clauses following the 'of' keyword
(that is, in the success case when no exception was
raised).
OTP-16718 Application(s): erts, kernel, stdlib
Related Id(s): PR-2735
Process aliases as outlined by EEP 53 has been
introduced. Process aliases is introduced in order to
provide a lightweight mechanism that can prevent late
replies after timeout or connection loss. For more
information, see EEP 53 and the documentation of the
new alias/1 BIF and the new options to the monitor/3
BIF.
The call operation in the framework used by gen_server,
gen_statem, and gen_event has been updated to utilize
alias in order to prevent late responses. The
gen_statem behavior still use a proxy process in the
distributed case, since it has always prevented late
replies and aliases wont work against pre OTP 24 nodes.
The proxy process can be removed in OTP 26.
The alias feature also made it possible to introduce
new functions similar to the erpc:receive_response()
function in the gen behaviors, so the new functions
gen_server:receive_response(),
gen_statem:receive_response(),
gen_event:receive_response() have also been introduced.
OTP-16800 Application(s): wx
The application has been completely rewritten in order
to use wxWidgets version 3 as its base.
Add basic documentation generated from the wxWidgets
project.
OTP-16824 Application(s): compiler
Related Id(s): PR-2664, PR-3006
*** POTENTIAL INCOMPATIBILITY ***
Compiler warnings and errors now include column numbers
in addition to line numbers.
When a compiler message is emitted, the source line is
printed along with a marker (a ^ character) that
indicates the column position of the issue. The option
'brief' removes the printout of the source line.
The compiler option {error_location, line | column} has
been added. The default value is column. Besides adding
column numbers to compilation warnings and errors, the
option also determines whether column numbers are
included in abstract code. If tools stop working,
setting the environment variable ERL_COMPILER_OPTIONS
can help (include {error_location, line}).
The compiler will now call the function
PT:parse_transform_info/0 in parse transforms (if it
exists). It can be used by parse transforms to signal
that they can only handle line numbers in abstract
code.
OTP-16885 Application(s): erts
Related Id(s): PR-2745
The BeamAsm JIT-compiler has been added to Erlang/OTP.
The JIT-compiler is enabled by default on most x86
64-bit platforms that have a C++ compiler that can
compile C++17. To verify that a JIT enabled emulator is
running you can use erlang:system_info(emu_flavor).
For more information see the internal documentation of
BeamAsm in erts.
OTP-16949 Application(s): edoc
Related Id(s): OTP-17192, PR-2803
*** POTENTIAL INCOMPATIBILITY ***
EDoc, the Erlang documentation engine, hits version 1.0
with this release, which means a few changes.
EDoc is now capable of emitting EEP-48 doc chunks. This
means that, with some configuration, community projects
can now provide documentation for shell_docs the same
way that OTP libraries did since OTP 23.0.
The @spec and @type EDoc tags have been deprecated.
These are not supported with the new chunk-generating
doclet and layout. Moreover, previously when there was
a redundant @spec tag and -spec attribute defined for
the same function, the @spec tag would take precedence.
Now, the -spec attribute takes precedence and is more
important. The same is true for redundant @type tags
and -type attributes. Warnings are now emitted when
such redundant entries are found.
See the Doc chunks chapter in the Edoc User's Guide for
more details.
OTP-16964 Application(s): compiler
Generators in list and binary comprehensions will now
raise a {bad_generator,Generator} exception if the
generator has an incorrect type (instead of raising an
ad-hoc badarg or badarih exception). Similarly, when a
filter does not evaluate to a boolean, a
{bad_filter,Filter} exception will be raised. Some
minor bugs in the compilation of binary comprehensions
have also been fixed.
OTP-16981 Application(s): compiler
Related Id(s): ERL-1113
Some compiler warnings, such as the warning for an
expression whose result is ignored, could not be
suppressed by assigning to a variable beginning with
'_', but only by assigning to the anonymous variable
('_'). This has now been changed so that any warning
that can be suppressed by assigning to the anonymous
variable can also be suppressed by assigning to a
variable beginning with '_'.
OTP-17044 Application(s): ssl
Related Id(s): PR-2654
Make TLS handshakes in Erlang distribution concurrent.
OTP-17213 Application(s): wx
Related Id(s): PR-3027
Added support for wxWebView.
---------------------------------------------------------------------
--- POTENTIAL INCOMPATIBILITIES -------------------------------------
---------------------------------------------------------------------
OTP-15107 Application(s): stdlib
Related Id(s): ERL-1381, PR-2813
Time-outs in gen_statem with relative time 0 did not
behave quite according to the intended model. This has
now been corrected.
The correction introduces a small potential
incompatibility e.g when combining a state time-out
with inserted events, and the inserted event does a
state change in the state with the time-out. Before
this correction the state time-out could be delivered
even after the second state change, but now it is
guaranteed that a state time-out is only delivered in
the state it was started for, even in this corner case.
OTP-16560 Application(s): megaco
All the pre-v3 codec(s) (prev3a, prev3b and prev3c) was
deprecated in OTP-23.0. They have now been removed.
OTP-16656 Application(s): crypto
The functions and cipher names that were deprecated in
OTP-23.0 are now removed.
OTP-16749 Application(s): erts, kernel
Related Id(s): OTP-14601
The experimental new socket API has been further
developed. Some backwards incompatible changes with
respect to OTP 23 have been made.
The control message format has been changed so a
decoded value is now in the 'value' field instead of in
the 'data' field. The 'data' field now always contains
binary data.
Some type names have been changed regarding message
headers and control message headers.
socket:bind/2 now returns plain ok instead of {ok,
Port} which was only relevant for the inet and inet6
address families and often not interesting. To find out
which port was chosen use socket:sockname/1.
OTP-16809 Application(s): kernel
Related Id(s): ERL-1313
Change the value of the tag head returned by
disk_log:info/1 from {ok, Head} to just Head.
OTP-16811 Application(s): kernel
Remove the support for distributed disk logs. The new
function disk_log:all/0 is to be used instead of
disk_log:accessible_logs/0. The function
disk_log:close/1 is to be used instead of
disk_log:lclose/1,2.
OTP-16824 Application(s): compiler
Related Id(s): PR-2664, PR-3006
*** HIGHLIGHT ***
Compiler warnings and errors now include column numbers
in addition to line numbers.
When a compiler message is emitted, the source line is
printed along with a marker (a ^ character) that
indicates the column position of the issue. The option
'brief' removes the printout of the source line.
The compiler option {error_location, line | column} has
been added. The default value is column. Besides adding
column numbers to compilation warnings and errors, the
option also determines whether column numbers are
included in abstract code. If tools stop working,
setting the environment variable ERL_COMPILER_OPTIONS
can help (include {error_location, line}).
The compiler will now call the function
PT:parse_transform_info/0 in parse transforms (if it
exists). It can be used by parse transforms to signal
that they can only handle line numbers in abstract
code.
OTP-16878 Application(s): erts
The code loader has been rewritten in order to be able
to load JIT:ed code. As a consequence of this, it is no
longer possible to load HiPE code.
OTP-16943 Application(s): os_mon
Related Id(s): OTP-16906
The temporarily introduced configuration parameter
memsup_improved_system_memory_data has been removed.
OTP-16945 Application(s): erts
Change escripts to output any errors or warnings to
standard error instead of standard out.
OTP-16949 Application(s): edoc
Related Id(s): OTP-17192, PR-2803
*** HIGHLIGHT ***
EDoc, the Erlang documentation engine, hits version 1.0
with this release, which means a few changes.
EDoc is now capable of emitting EEP-48 doc chunks. This
means that, with some configuration, community projects
can now provide documentation for shell_docs the same
way that OTP libraries did since OTP 23.0.
The @spec and @type EDoc tags have been deprecated.
These are not supported with the new chunk-generating
doclet and layout. Moreover, previously when there was
a redundant @spec tag and -spec attribute defined for
the same function, the @spec tag would take precedence.
Now, the -spec attribute takes precedence and is more
important. The same is true for redundant @type tags
and -type attributes. Warnings are now emitted when
such redundant entries are found.
See the Doc chunks chapter in the Edoc User's Guide for
more details.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-16968 Application(s): kernel
The pg2 module has been removed.
OTP-16970 Application(s): erl_interface
The registry functionality part of erl_interface has
been removed. It was as of OTP 23 deprecated and
scheduled for removal in OTP 24.
OTP-16971 Application(s): stdlib
The filename:src/1 function which was deprecated in OTP
20 has been removed. Use filelib:find_source/1,3
instead.
OTP-16974 Application(s): ssl
Removed ssl:ssl_accept/1,2,3 and ssl:cipher:suites/0,1
use ssl:handshake/1,2,3 and ssl:cipher_suites/2,3
instead.
OTP-16987 Application(s): erts
The erlang:monitor_node/2 BIF will now fail with a
notalive exception if distribution has not been started
on the current node; it used to fail with a badarg
exception.
OTP-17156 Application(s): kernel
Fix various issues with the gen_tcp_socket. Including
documenting some incompatibilities.
OTP-17216 Application(s): kernel
Related Id(s): PR-2989
The behaviour for gen_tcp:connect/3,4 has been changed
to not per default bind to an address, which allows the
network stack to delay the address and port selection
to when the remote address is known. This allows better
port re-use, and thus enables far more outgoing
connections, since the ephemeral port range no longer
has to be a hard limit.
There is a theoretical possibility that this behaviour
change can affect the set of possible error values, or
have other small implications on some platforms.
OTP-17219 Application(s): wx
Related Id(s): OTP-16800
Due to the support of the new backend versions some API
incompatibilities have been introduced. Examples of
changes are:
wxWindowDC default creators have been removed
wxClientDC default creators have been removed
wxPaintDC default creators have been removed
wxWindow:setVirtualSizeHints() has been deprecated in
wxWidgets and removed
wxWindow:makeModal() has been deprecated in wxWidgets
and removed
wxToolBar:add/insertTool without label have been
deprecated in wxWidgets and removed
wxStyledTextCtrl some functions have changed arguments
from boolean to int
wxSizerItem:new() Some arguments have become options
Removed deprecated wxSizerItem:setWindow() use
assignWindow()
Removed deprecated wxSizerItem:setSpacer() use
assignSpacer()
Removed deprecated wxSizerItem:setSpacer() use
assignSpacer()
Removed deprecated wxSizerItem:setSizer() use
assignSizer()
wxMenu append/insert/prepend have changed return value
and lost IsCheckable argument
wxListCtrl:setItem/4 changed return value
wxImage:convertToGreyscale() options have changed
wxGridSizer:wxGridSizer() options have changed
wxGrid API have many changes
wxGraphicsRenderer:create*GradientBrush() uses
GradientStops now
wxGraphicsRenderer:createPen() have been removed
wxGraphicsRenderer:create*GradientBrush() uses
GradientStops now
wxGLCanvas API is incompatible
wxFlexGridSizer:wxFlexGridSizer() options have changed
wxDisplay:new() options have changed
wxCalendarDateAttr:new(ColText [,OptList]) have been
removed
wxBitmapButton:set/getBitmapSelected() have been
removed
---------------------------------------------------------------------
--- asn1-5.1 --------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17123 Application(s): asn1, compiler, et, xmerl
The compiler will now emit warnings when (previously
bound) underscore-prefixed variables are matched.
Full runtime dependencies of asn1-5.1: erts-7.0, kernel-3.0,
stdlib-2.0
---------------------------------------------------------------------
--- common_test-1.19.2 ----------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-16940 Application(s): common_test
Related Id(s): ERL-1335
The option release_shell could crash when used together
with the spec option.
--- Improvements and New Features ---
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
Full runtime dependencies of common_test-1.19.2: compiler-6.0,
crypto-3.6, debugger-4.1, erts-7.0, ftp-1.0.0, inets-6.0, kernel-4.0,
observer-2.1, runtime_tools-1.8.16, sasl-2.4.2, snmp-5.1.2, ssh-4.0,
stdlib-3.5, syntax_tools-1.7, tools-2.8, xmerl-1.3.8
---------------------------------------------------------------------
--- compiler-8.0 ----------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17077 Application(s): compiler, erts, stdlib
Related Id(s): ERL-1431, PR-2903, PR-2905, PR-2906
A floating point zero (0.0) can be both positive (+0.0)
and negative (-0.0). Multiple bugs in the compiler,
runtime system, and STDLIB have been fixed to ensure
that the minus sign on 0.0 is not lost.
OTP-17104 Application(s): compiler
Related Id(s): ERL-1380
A repeated stack trace variable in a try/catch was not
rejected. The following example will now cause a
compilation error:
try E catch _:A:A -> A end.
OTP-17118 Application(s): compiler, stdlib
Related Id(s): PR-2825
Eliminated a Dialyzer crashed when the -MMD option is
used to generate a dependency file and a BEAM file a
the same time.
OTP-17206 Application(s): compiler
When the makedep option was given, the compiler would
crash if the dependency output contained non-latin1
characters. The compiler will now output the dependency
information encoded in UTF-8 to avoid crashing.
--- Improvements and New Features ---
OTP-10391 Application(s): compiler
Related Id(s): OTP-16226
Selective receive optimization will now be applied much
more often.
The new recv_opt_info compile flag can be used to print
diagnostics relating to this optimization.
You can read more about the selective receive
optimization in the Efficiency Guide.
OTP-16334 Application(s): compiler
erlang:throw/1 will no longer build stack traces when
we can prove that they will never be inspected.
OTP-16706 Application(s): compiler
Related Id(s): ERL-1281
*** HIGHLIGHT ***
Variables bound between the keywords 'try' and 'of' can
now be used in the clauses following the 'of' keyword
(that is, in the success case when no exception was
raised).
OTP-16824 Application(s): compiler
Related Id(s): PR-2664, PR-3006
*** HIGHLIGHT ***
*** POTENTIAL INCOMPATIBILITY ***
Compiler warnings and errors now include column numbers
in addition to line numbers.
When a compiler message is emitted, the source line is
printed along with a marker (a ^ character) that
indicates the column position of the issue. The option
'brief' removes the printout of the source line.
The compiler option {error_location, line | column} has
been added. The default value is column. Besides adding
column numbers to compilation warnings and errors, the
option also determines whether column numbers are
included in abstract code. If tools stop working,
setting the environment variable ERL_COMPILER_OPTIONS
can help (include {error_location, line}).
The compiler will now call the function
PT:parse_transform_info/0 in parse transforms (if it
exists). It can be used by parse transforms to signal
that they can only handle line numbers in abstract
code.
OTP-16867 Application(s): compiler
Related Id(s): ERL-1354
Fixed a performance bug that made functions with lots
of try/after blocks slow to compile.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-16964 Application(s): compiler
*** HIGHLIGHT ***
Generators in list and binary comprehensions will now
raise a {bad_generator,Generator} exception if the
generator has an incorrect type (instead of raising an
ad-hoc badarg or badarih exception). Similarly, when a
filter does not evaluate to a boolean, a
{bad_filter,Filter} exception will be raised. Some
minor bugs in the compilation of binary comprehensions
have also been fixed.
OTP-16981 Application(s): compiler
Related Id(s): ERL-1113
*** HIGHLIGHT ***
Some compiler warnings, such as the warning for an
expression whose result is ignored, could not be
suppressed by assigning to a variable beginning with
'_', but only by assigning to the anonymous variable
('_'). This has now been changed so that any warning
that can be suppressed by assigning to the anonymous
variable can also be suppressed by assigning to a
variable beginning with '_'.
OTP-17078 Application(s): compiler
Related Id(s): ERL-1430, PR-2918
The previously undocumented compiler options
warn_missing_spec and warn_missing_spec_all are now
documented.
OTP-17123 Application(s): asn1, compiler, et, xmerl
The compiler will now emit warnings when (previously
bound) underscore-prefixed variables are matched.
OTP-17168 Application(s): compiler
Erlang source files not encoded in utf-8 will no longer
be accepted by the compiler unless it contains a
"coding: latin-1" comment.
OTP-17172 Application(s): compiler
New compiler options from_abstr and no_lint have been
added. They are useful when implementing other
languages running on the BEAM.
OTP-17207 Application(s): compiler, erts
The bit matching and construction syntax now supports
16-bit floats (IEEE 754-2008).
Full runtime dependencies of compiler-8.0: crypto-3.6, erts-11.0,
kernel-7.0, stdlib-3.13
---------------------------------------------------------------------
--- crypto-5.0 ------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-16882 Application(s): crypto
Add /usr/local/opt/openssl to the openssl configure
search path. This path is where some tools on OS X
place openssl.
OTP-17105 Application(s): crypto, erts, odbc, wx
Related Id(s): PR-2872
Fix compiler warnings produced by the clang compiler.
--- Improvements and New Features ---
OTP-16656 Application(s): crypto
*** POTENTIAL INCOMPATIBILITY ***
The functions and cipher names that were deprecated in
OTP-23.0 are now removed.
OTP-17001 Application(s): crypto
Related Id(s): PR-2852
Removed installed directory priv/obj/ containing
superfluous object files.
Full runtime dependencies of crypto-5.0: erts-9.0, kernel-5.3,
stdlib-3.4
---------------------------------------------------------------------
--- debugger-5.1 ----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16686 Application(s): debugger, erts, kernel, stdlib
*** HIGHLIGHT ***
Extended error information for failing BIF calls as
proposed in EEP 54 has been implemented.
When a BIF call from the Erlang shell fails, more
information about which argument or arguments that were
in error will be printed. The same extended error
information will by proc_lib, common_test, and qlc when
BIF calls fail.
For applications that wish to provide the same extended
error information, there are new functions
erl_error:format_exception/3 and
erl_error:format_exception/4.
There is a new error/3 BIF that allows applications or
libraries to provide extended error information in the
same way for their own exceptions.
Full runtime dependencies of debugger-5.1: compiler-5.0, erts-9.0,
kernel-5.3, stdlib-3.4, wx-1.2
---------------------------------------------------------------------
--- dialyzer-4.4 ----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16883 Application(s): dialyzer
Some internal HiPE modules have been moved into the
dialyzer application so that dialyzer works when HiPE
is disabled.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-16986 Application(s): dialyzer
Related Id(s): ERL-1379, ERL-1480, GH-4033
Add warning option no_underspecs.
OTP-16995 Application(s): dialyzer
Related Id(s): ERL-1348
Report filename and location for warnings returned due
to the -Wunknown option. When used from the
command-line, one location per file is printed.
OTP-17084 Application(s): dialyzer
Add types and specifications for documentation.
OTP-17177 Application(s): dialyzer
Related Id(s): OTP-16824
Add option error_location. The option is recognized if
included in the environment variable
ERL_COMPILER_OPTIONS.
OTP-17183 Application(s): dialyzer
Related Id(s): ERL-892, GH-4493
Clarify how to declare records used in match patterns.
Full runtime dependencies of dialyzer-4.4: compiler-7.0, erts-9.0,
kernel-5.3, stdlib-3.4, syntax_tools-2.0, wx-1.2
---------------------------------------------------------------------
--- edoc-1.0 --------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17092 Application(s): edoc
Fix so that the edoc_doclet option file_suffix also
effects the links emitted into the module index.
--- Improvements and New Features ---
OTP-16949 Application(s): edoc
Related Id(s): OTP-17192, PR-2803
*** HIGHLIGHT ***
*** POTENTIAL INCOMPATIBILITY ***
EDoc, the Erlang documentation engine, hits version 1.0
with this release, which means a few changes.
EDoc is now capable of emitting EEP-48 doc chunks. This
means that, with some configuration, community projects
can now provide documentation for shell_docs the same
way that OTP libraries did since OTP 23.0.
The @spec and @type EDoc tags have been deprecated.
These are not supported with the new chunk-generating
doclet and layout. Moreover, previously when there was
a redundant @spec tag and -spec attribute defined for
the same function, the @spec tag would take precedence.
Now, the -spec attribute takes precedence and is more
important. The same is true for redundant @type tags
and -type attributes. Warnings are now emitted when
such redundant entries are found.
See the Doc chunks chapter in the Edoc User's Guide for
more details.
OTP-17095 Application(s): edoc
Related Id(s): PR-2914
Edoc has been updated to use -spec to document its own
interface instead of @doc@ tags.
Together with this change the inter-application linking
for -spec style documentation has been improved.
OTP-17153 Application(s): edoc
Related Id(s): PR-2674
Allow user defined edoc macros to be functions.
Full runtime dependencies of edoc-1.0: erts-6.0, inets-5.10,
kernel-3.0, stdlib-3.15, syntax_tools-1.6.14, xmerl-1.3.7
---------------------------------------------------------------------
--- eldap-1.2.9 -----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17166 Application(s): eldap
Related Id(s): PR-2904
Add ability to specify size limit on ldap requests
Full runtime dependencies of eldap-1.2.9: asn1-3.0, erts-6.0,
kernel-3.0, ssl-5.3.4, stdlib-2.0
---------------------------------------------------------------------
--- erl_docgen-1.1 --------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17122 Application(s): erl_docgen, stdlib
Fixed bug in shell_docs and erl_docgen that interpreted
em tags as strong.
--- Improvements and New Features ---
OTP-16877 Application(s): erl_docgen
Add support for displaying .svg images.
OTP-17192 Application(s): erl_docgen
Related Id(s): PR-2803
Updated the way specs are generated after changes in
edoc.
Full runtime dependencies of erl_docgen-1.1: edoc-1.0, erts-9.0,
stdlib-3.15, xmerl-1.3.7
---------------------------------------------------------------------
--- erl_interface-5.0 -----------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16720 Application(s): erl_interface, erts, jinterface
Related Id(s): PR-2680
Accept 64-bit process identifiers from external nodes.
This is the first step in an upgrade path toward using
64-bit pids in a future OTP release.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-16970 Application(s): erl_interface
*** POTENTIAL INCOMPATIBILITY ***
The registry functionality part of erl_interface has
been removed. It was as of OTP 23 deprecated and
scheduled for removal in OTP 24.
OTP-17005 Application(s): erl_interface, erts, jinterface,
kernel, stdlib
Related Id(s): OTP-16718
Accept references up to a size of 160-bits from remote
nodes. This is the first step in an upgrade path toward
using references up to 160-bits in a future OTP
release.
OTP-17007 Application(s): erl_interface, erts, jinterface
Accept 64-bit port identifiers from external nodes.
This is the first step in an upgrade path toward using
64-bit port identifiers in a future OTP release.
--- Known Bugs and Problems ---
OTP-16607 Application(s): erl_interface
Related Id(s): OTP-16608
The ei API for decoding/encoding terms is not fully
64-bit compatible since terms that have a
representation on the external term format larger than
2 GB cannot be handled.
---------------------------------------------------------------------
--- erts-12.0 -------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-16822 Application(s): erts
Related Id(s): PR-2723
file:open/2 now throws an badarg error when opened with
both the ram and raw options.
OTP-16879 Application(s): erts
The estone benchmark has been updated to better reflect
changes in the compiler and run-time system.
OTP-16880 Application(s): erts
Fix profile guided optimization of run-time system when
using GCC 7 or later.
OTP-16884 Application(s): erts
Fix double close of fd when creating crash dump.
OTP-17014 Application(s): erts
Improve erl error message when unable to open included
args_file.
OTP-17020 Application(s): erts
Remove warning text about the -- operation from
documentation
The -- operation was optimized in Erlang/OTP 22 so that
its worst case complexity is O(N*log(N)), where N is
the total size of the input lists. Therefore, the
warning in the documentation saying that the time
complexity is proportional to length(A)*length(B) is
incorrect and is no longer needed. Notice that
Erlang/OTP 21 will no longer be supported when
Erlang/OTP 24 gets released.
OTP-17077 Application(s): compiler, erts, stdlib
Related Id(s): ERL-1431, PR-2903, PR-2905, PR-2906
A floating point zero (0.0) can be both positive (+0.0)
and negative (-0.0). Multiple bugs in the compiler,
runtime system, and STDLIB have been fixed to ensure
that the minus sign on 0.0 is not lost.
OTP-17105 Application(s): crypto, erts, odbc, wx
Related Id(s): PR-2872
Fix compiler warnings produced by the clang compiler.
OTP-17131 Application(s): erts
Related Id(s): GH-4360, PR-3031
Windows process erl.exe killed if its service process
erlsrv.exe terminates.
--- Improvements and New Features ---
OTP-14601 Application(s): erts, kernel
Related Id(s): OTP-16749, PR-2641, PR-2670
The experimental socket module can now use any protocol
(by name) the OS supports. Suggested in PR-2641,
implemented in PR-2670.
OTP-16653 Application(s): erts
The deprecated function erlang:get_stacktrace/0 has
been removed. Use the new syntax in try/catch to
retrieve the stack backtrace.
OTP-16678 Application(s): erts, stdlib, syntax_tools, tools
Related Id(s): PR-2627
Support for handling abstract code created before OTP
R15 has been dropped.
OTP-16686 Application(s): debugger, erts, kernel, stdlib
*** HIGHLIGHT ***
Extended error information for failing BIF calls as
proposed in EEP 54 has been implemented.
When a BIF call from the Erlang shell fails, more
information about which argument or arguments that were
in error will be printed. The same extended error
information will by proc_lib, common_test, and qlc when
BIF calls fail.
For applications that wish to provide the same extended
error information, there are new functions
erl_error:format_exception/3 and
erl_error:format_exception/4.
There is a new error/3 BIF that allows applications or
libraries to provide extended error information in the
same way for their own exceptions.
OTP-16687 Application(s): erts
Related Id(s): PR-2762, PR-2996
The erlang module documentation has been updated to
improve clarity and description of edge cases.
OTP-16703 Application(s): erts, kernel
Related Id(s): PR-2620
An example implementation of Erlang distribution over
UDS using distribution processes has been introduced.
Thanks to Jérôme de Bretagne
OTP-16712 Application(s): erts
Improve code generation when creating funs by adding a
new beam instruction make_fun3 that does not do GC and
allows for better register allocation.
OTP-16718 Application(s): erts, kernel, stdlib
Related Id(s): PR-2735
*** HIGHLIGHT ***
Process aliases as outlined by EEP 53 has been
introduced. Process aliases is introduced in order to
provide a lightweight mechanism that can prevent late
replies after timeout or connection loss. For more
information, see EEP 53 and the documentation of the
new alias/1 BIF and the new options to the monitor/3
BIF.
The call operation in the framework used by gen_server,
gen_statem, and gen_event has been updated to utilize
alias in order to prevent late responses. The
gen_statem behavior still use a proxy process in the
distributed case, since it has always prevented late
replies and aliases wont work against pre OTP 24 nodes.
The proxy process can be removed in OTP 26.
The alias feature also made it possible to introduce
new functions similar to the erpc:receive_response()
function in the gen behaviors, so the new functions
gen_server:receive_response(),
gen_statem:receive_response(),
gen_event:receive_response() have also been introduced.
OTP-16720 Application(s): erl_interface, erts, jinterface
Related Id(s): PR-2680
Accept 64-bit process identifiers from external nodes.
This is the first step in an upgrade path toward using
64-bit pids in a future OTP release.
OTP-16749 Application(s): erts, kernel
Related Id(s): OTP-14601
*** POTENTIAL INCOMPATIBILITY ***
The experimental new socket API has been further
developed. Some backwards incompatible changes with
respect to OTP 23 have been made.
The control message format has been changed so a
decoded value is now in the 'value' field instead of in
the 'data' field. The 'data' field now always contains
binary data.
Some type names have been changed regarding message
headers and control message headers.
socket:bind/2 now returns plain ok instead of {ok,
Port} which was only relevant for the inet and inet6
address families and often not interesting. To find out
which port was chosen use socket:sockname/1.
OTP-16788 Application(s): erts
Remove old unused +MYm and ERL_MALLOC_LIB options.
OTP-16814 Application(s): erts
Related Id(s): PR-2704
Increase timer resolution on windows.
OTP-16878 Application(s): erts
*** POTENTIAL INCOMPATIBILITY ***
The code loader has been rewritten in order to be able
to load JIT:ed code. As a consequence of this, it is no
longer possible to load HiPE code.
OTP-16881 Application(s): erts
Add support in the Erlang/OTP build system to generate
a compilation database that can be used by third-party
tools (such as irony in Emacs) to compile the erts C
and C++ source code. Create the database using make
compdb.
OTP-16885 Application(s): erts
Related Id(s): PR-2745
*** HIGHLIGHT ***
The BeamAsm JIT-compiler has been added to Erlang/OTP.
The JIT-compiler is enabled by default on most x86
64-bit platforms that have a C++ compiler that can
compile C++17. To verify that a JIT enabled emulator is
running you can use erlang:system_info(emu_flavor).
For more information see the internal documentation of
BeamAsm in erts.
OTP-16898 Application(s): erts
Related Id(s): OTP-16856
By default all ERTS internal memory allocators based on
alloc_util will now use their own separate carrier pool
for migration of carriers instead of using a node
global carrier pool. This was the default behavior
between OTP 17 and OTP 21, but changed to use a node
global carrier pool as of OTP 22.0. Usage of the node
global carrier pool proved troublesome since it had a
tendency to spread long lived blocks into allocators
with normally short lived blocks causing increased
memory fragmentation. The node global carrier pool
behavior as well as other behaviors can be configured
using the +M<S>cp command line argument.
OTP-16936 Application(s): erts, stdlib
Related Id(s): ERL-1367
New functions have been added to the maps module:
merge_with/3, intersect/2, intersect_with/3,
filtermap/2, from_keys/2, and maps:foreach/2.
maps:merge_with/3 is the same as merge/2 but takes an
extra fun that is used to combine items with the same
key.
maps:intersect/2 computes the intersection of two maps.
maps:intersect_with/3 is the same as intersect/2 but
takes an extra fun that is used to combine intersecting
items.
maps:filtermap/2 allows filtering and mapping of a map
in a single pass.
maps:from_keys/2 constructs a map from a list of keys
and a single value and can be used to to optimize sets
operations such as from_list/1, filter/2,
intersection/2, and subtract/2.
maps:foreach/2 allows iteration over a map without
returning any value.
OTP-16945 Application(s): erts
*** POTENTIAL INCOMPATIBILITY ***
Change escripts to output any errors or warnings to
standard error instead of standard out.
OTP-16952 Application(s): erts, kernel
A new erl parameter for specifying a file descriptor
with configuration data has been added. This makes it
possible to pass the parameter "-configfd FD" when
executing the erl command. When this option is given,
the system will try to read and parse configuration
parameters from the file descriptor.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-16980 Application(s): erts, stdlib
Related Id(s): ERL-1308
The pretty printer for floating point number have been
changed to make it easier to see if the integer part of
the number has been rounded. After the change the the
digit that may have been rounded always appears last or
just before the exponent character (e or E). This is
accomplished by always printing the number using
scientific notation if it is so large that the integer
part could be rounded.
OTP-16987 Application(s): erts
*** POTENTIAL INCOMPATIBILITY ***
The erlang:monitor_node/2 BIF will now fail with a
notalive exception if distribution has not been started
on the current node; it used to fail with a badarg
exception.
OTP-17005 Application(s): erl_interface, erts, jinterface,
kernel, stdlib
Related Id(s): OTP-16718
Accept references up to a size of 160-bits from remote
nodes. This is the first step in an upgrade path toward
using references up to 160-bits in a future OTP
release.
OTP-17007 Application(s): erl_interface, erts, jinterface
Accept 64-bit port identifiers from external nodes.
This is the first step in an upgrade path toward using
64-bit port identifiers in a future OTP release.
OTP-17028 Application(s): erts
One can now pass the ERL_ROOTDIR environment variable
to the erl and start scrips. This makes it easier to
use Erlang for Android apps. On Andorid, apps don't
control where they will be installed.
OTP-17057 Application(s): erts, stdlib
All long running functions in the maps API are now
yielding. In previous releases the functions
maps:from_list/1, maps:keys/1 and maps:values/1 did not
yield. This could cause unfair scheduling of processes.
OTP-17207 Application(s): compiler, erts
The bit matching and construction syntax now supports
16-bit floats (IEEE 754-2008).
Full runtime dependencies of erts-12.0: kernel-8.0, sasl-3.3,
stdlib-3.13
---------------------------------------------------------------------
--- et-1.7 ----------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17123 Application(s): asn1, compiler, et, xmerl
The compiler will now emit warnings when (previously
bound) underscore-prefixed variables are matched.
Full runtime dependencies of et-1.7: erts-9.0, kernel-5.3,
runtime_tools-1.10, stdlib-3.4, wx-1.2
---------------------------------------------------------------------
--- ftp-1.1 ---------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-16926 Application(s): ftp
Related Id(s): ERL-1450, GH-4473
Use OTP supervisor as intended, avoiding surprising
behavior as the killing of the user's process. Also,
FTP state handling logic is improved to avoid race
conditions that could result in unexpected errors.
--- Improvements and New Features ---
OTP-15523 Application(s): ftp
Related Id(s): OTP-15352, PR-1968
*** HIGHLIGHT ***
Add support for FTPES (explicit FTP over TLS).
Full runtime dependencies of ftp-1.1: erts-7.0, kernel-6.0,
stdlib-3.5
---------------------------------------------------------------------
--- inets-7.4 -------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16722 Application(s): inets
Drop all support for ftp and tftp in inets code.
OTP-16723 Application(s): inets
Deprecate following functions in httpd_util module:
flatlength/1, lhexlist_to_integer/1,
integer_to_hexlist/1, strip/1, and suffix/1.
OTP-16724 Application(s): inets
Remove support of HTTP 0.9 in httpd.
OTP-16725 Application(s): inets
Remove support of HTTP 0.9 in httpc.
Full runtime dependencies of inets-7.4: erts-6.0, kernel-3.0,
mnesia-4.12, runtime_tools-1.8.14, ssl-5.3.4, stdlib-3.5
---------------------------------------------------------------------
--- jinterface-1.12 -------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16720 Application(s): erl_interface, erts, jinterface
Related Id(s): PR-2680
Accept 64-bit process identifiers from external nodes.
This is the first step in an upgrade path toward using
64-bit pids in a future OTP release.
OTP-17005 Application(s): erl_interface, erts, jinterface,
kernel, stdlib
Related Id(s): OTP-16718
Accept references up to a size of 160-bits from remote
nodes. This is the first step in an upgrade path toward
using references up to 160-bits in a future OTP
release.
OTP-17007 Application(s): erl_interface, erts, jinterface
Accept 64-bit port identifiers from external nodes.
This is the first step in an upgrade path toward using
64-bit port identifiers in a future OTP release.
OTP-17170 Application(s): jinterface
Related Id(s): PR-3005
Make OtpErlangExternalFun's fields module, function and
arity public.
---------------------------------------------------------------------
--- kernel-8.0 ------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-14700 Application(s): kernel
Related Id(s): PR-2848
A bug has been fixed for the internal inet_res resolver
cache that handled a resolver configuration file status
timer incorrectly and caused performance problems due
to many unnecessary file system accesses.
OTP-16809 Application(s): kernel
Related Id(s): ERL-1313
*** POTENTIAL INCOMPATIBILITY ***
Change the value of the tag head returned by
disk_log:info/1 from {ok, Head} to just Head.
--- Improvements and New Features ---
OTP-13126 Application(s): kernel
Related Id(s): PR-3041
The cache used by the DNS resolver inet_res has been
improved to use ETS lookups instead of server calls.
This is a considerable speed improvement for cache
hits.
OTP-14485 Application(s): kernel
Related Id(s): PR-2891
The cache ETS table type for the internal DNS resolver
inet_res has been changed type changed (internally) to
get better speed and atomicity.
OTP-14601 Application(s): erts, kernel
Related Id(s): OTP-16749, PR-2641, PR-2670
The experimental socket module can now use any protocol
(by name) the OS supports. Suggested in PR-2641,
implemented in PR-2670.
OTP-16517 Application(s): kernel
Related Id(s): PR-2827
The DNS resolver inet_res has been updated to support
CAA (RFC 6844) and URI (RFC 7553) records.
OTP-16611 Application(s): kernel
Related Id(s): OTP-16749
*** HIGHLIGHT ***
A compatibility adaptor for gen_tcp to use the new
socket API has been implemented (gen_tcp_socket). Used
when setting the kernel application variable
inet_backend = socket.
OTP-16686 Application(s): debugger, erts, kernel, stdlib
*** HIGHLIGHT ***
Extended error information for failing BIF calls as
proposed in EEP 54 has been implemented.
When a BIF call from the Erlang shell fails, more
information about which argument or arguments that were
in error will be printed. The same extended error
information will by proc_lib, common_test, and qlc when
BIF calls fail.
For applications that wish to provide the same extended
error information, there are new functions
erl_error:format_exception/3 and
erl_error:format_exception/4.
There is a new error/3 BIF that allows applications or
libraries to provide extended error information in the
same way for their own exceptions.
OTP-16698 Application(s): kernel
Related Id(s): PR-2634
The file server can now be bypassed in file:delete/1,2
with the raw option.
OTP-16703 Application(s): erts, kernel
Related Id(s): PR-2620
An example implementation of Erlang distribution over
UDS using distribution processes has been introduced.
Thanks to Jérôme de Bretagne
OTP-16718 Application(s): erts, kernel, stdlib
Related Id(s): PR-2735
*** HIGHLIGHT ***
Process aliases as outlined by EEP 53 has been
introduced. Process aliases is introduced in order to
provide a lightweight mechanism that can prevent late
replies after timeout or connection loss. For more
information, see EEP 53 and the documentation of the
new alias/1 BIF and the new options to the monitor/3
BIF.
The call operation in the framework used by gen_server,
gen_statem, and gen_event has been updated to utilize
alias in order to prevent late responses. The
gen_statem behavior still use a proxy process in the
distributed case, since it has always prevented late
replies and aliases wont work against pre OTP 24 nodes.
The proxy process can be removed in OTP 26.
The alias feature also made it possible to introduce
new functions similar to the erpc:receive_response()
function in the gen behaviors, so the new functions
gen_server:receive_response(),
gen_statem:receive_response(),
gen_event:receive_response() have also been introduced.
OTP-16749 Application(s): erts, kernel
Related Id(s): OTP-14601
*** POTENTIAL INCOMPATIBILITY ***
The experimental new socket API has been further
developed. Some backwards incompatible changes with
respect to OTP 23 have been made.
The control message format has been changed so a
decoded value is now in the 'value' field instead of in
the 'data' field. The 'data' field now always contains
binary data.
Some type names have been changed regarding message
headers and control message headers.
socket:bind/2 now returns plain ok instead of {ok,
Port} which was only relevant for the inet and inet6
address families and often not interesting. To find out
which port was chosen use socket:sockname/1.
OTP-16793 Application(s): kernel
Related Id(s): ERL-1332, PR-2740
New function os:env/0 returns all OS environment
variables as a list of 2-tuples.
OTP-16811 Application(s): kernel
*** POTENTIAL INCOMPATIBILITY ***
Remove the support for distributed disk logs. The new
function disk_log:all/0 is to be used instead of
disk_log:accessible_logs/0. The function
disk_log:close/1 is to be used instead of
disk_log:lclose/1,2.
OTP-16947 Application(s): kernel
Related Id(s): PR-2781
Expand the spec for erl_epmd:listen_port_please/2 to
mirror erl_epmd:port_please/2.
OTP-16952 Application(s): erts, kernel
A new erl parameter for specifying a file descriptor
with configuration data has been added. This makes it
possible to pass the parameter "-configfd FD" when
executing the erl command. When this option is given,
the system will try to read and parse configuration
parameters from the file descriptor.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-16968 Application(s): kernel
*** POTENTIAL INCOMPATIBILITY ***
The pg2 module has been removed.
OTP-17005 Application(s): erl_interface, erts, jinterface,
kernel, stdlib
Related Id(s): OTP-16718
Accept references up to a size of 160-bits from remote
nodes. This is the first step in an upgrade path toward
using references up to 160-bits in a future OTP
release.
OTP-17015 Application(s): kernel
Allow utf-8 binaries as parts of logger_formatter
template.
OTP-17103 Application(s): kernel
Related Id(s): PR-2949
Allow the shell history of an erlang node to be fetched
and stores using a custom callback module. See
shell_history configuration parameter in the kernel
documentation for more details.
OTP-17106 Application(s): kernel
Related Id(s): PR-2885
The simple logger (used to log events that happen
before kernel has been started) has been improved to
print prettier error messages.
OTP-17156 Application(s): kernel
*** POTENTIAL INCOMPATIBILITY ***
Fix various issues with the gen_tcp_socket. Including
documenting some incompatibilities.
OTP-17181 Application(s): kernel
Related Id(s): PR-2457
Added support in logger for setting primary metadata.
The primary metadata is passed as a base metadata to
all log events in the system. See Metadata in the
Logger chapter of the Kernel User's Guide for more
details.
OTP-17189 Application(s): kernel, reltool, sasl
Related Id(s): PR-2675
Recognize new key 'optional_applications' in
application resource files.
OTP-17198 Application(s): kernel
Related Id(s): PR-2721
The Fun's passed to logger:log/2,3,4 can now return
metadata that will only be fetched when needed. See
logger:log/2,3,4 for more details.
OTP-17201 Application(s): kernel
Related Id(s): PR-4534
erpc:multicall() has been rewritten to be able to
utilize the newly introduced and improved
reference/receive optimization.
OTP-17216 Application(s): kernel
Related Id(s): PR-2989
*** POTENTIAL INCOMPATIBILITY ***
The behaviour for gen_tcp:connect/3,4 has been changed
to not per default bind to an address, which allows the
network stack to delay the address and port selection
to when the remote address is known. This allows better
port re-use, and thus enables far more outgoing
connections, since the ephemeral port range no longer
has to be a hard limit.
There is a theoretical possibility that this behaviour
change can affect the set of possible error values, or
have other small implications on some platforms.
Full runtime dependencies of kernel-8.0: erts-12.0, sasl-3.0,
stdlib-3.13
---------------------------------------------------------------------
--- megaco-4.0 ------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16560 Application(s): megaco
*** POTENTIAL INCOMPATIBILITY ***
All the pre-v3 codec(s) (prev3a, prev3b and prev3c) was
deprecated in OTP-23.0. They have now been removed.
OTP-17049 Application(s): megaco, snmp
Removed deprecated functions marked for removal.
Full runtime dependencies of megaco-4.0: asn1-3.0, debugger-4.0,
erts-7.0, et-1.5, kernel-3.0, runtime_tools-1.8.14, stdlib-2.5
---------------------------------------------------------------------
--- mnesia-4.18.2 ---------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17217 Application(s): mnesia
Suppression of deprecation warnings has been added to
the source files of the Mnesia application.
Full runtime dependencies of mnesia-4.18.2: erts-9.0, kernel-5.3,
stdlib-3.4
---------------------------------------------------------------------
--- observer-2.9.6 --------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17214 Application(s): observer
Updated gui parts to work with the new wx version.
Full runtime dependencies of observer-2.9.6: erts-11.0, et-1.5,
kernel-7.0, runtime_tools-1.8.14, stdlib-3.13, wx-1.2
---------------------------------------------------------------------
--- odbc-2.13.3 -----------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17105 Application(s): crypto, erts, odbc, wx
Related Id(s): PR-2872
Fix compiler warnings produced by the clang compiler.
Full runtime dependencies of odbc-2.13.3: erts-6.0, kernel-3.0,
stdlib-2.0
---------------------------------------------------------------------
--- os_mon-2.7 ------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16943 Application(s): os_mon
Related Id(s): OTP-16906
*** POTENTIAL INCOMPATIBILITY ***
The temporarily introduced configuration parameter
memsup_improved_system_memory_data has been removed.
OTP-16944 Application(s): os_mon
Related Id(s): PR-2787
Fix disk_sup to also search the system PATH on linux
when looking for the df program.
Full runtime dependencies of os_mon-2.7: erts-6.0, kernel-3.0,
sasl-2.4, stdlib-2.0
---------------------------------------------------------------------
--- parsetools-2.3 --------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16957 Application(s): parsetools, tools
Add types and specifications for documentation.
OTP-17023 Application(s): parsetools
Let Leex and Yecc recognize the environment variable
ERL_COMPILER_OPTIONS. Add Yecc option {error_location,
column | line}.
Full runtime dependencies of parsetools-2.3: erts-6.0, kernel-3.0,
stdlib-2.5
---------------------------------------------------------------------
--- reltool-0.9 -----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17189 Application(s): kernel, reltool, sasl
Related Id(s): PR-2675
Recognize new key 'optional_applications' in
application resource files.
Full runtime dependencies of reltool-0.9: erts-7.0, kernel-3.0,
sasl-2.4, stdlib-3.4, tools-2.6.14, wx-1.2
---------------------------------------------------------------------
--- runtime_tools-1.15.2 --------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
Full runtime dependencies of runtime_tools-1.15.2: erts-11.0,
kernel-7.0, mnesia-4.12, stdlib-3.13
---------------------------------------------------------------------
--- sasl-4.1 --------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-17189 Application(s): kernel, reltool, sasl
Related Id(s): PR-2675
Recognize new key 'optional_applications' in
application resource files.
Full runtime dependencies of sasl-4.1: erts-10.2, kernel-5.3,
stdlib-3.4, tools-2.6.14
---------------------------------------------------------------------
--- snmp-5.7.4 ------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17049 Application(s): megaco, snmp
Removed deprecated functions marked for removal.
Full runtime dependencies of snmp-5.7.4: crypto-3.3, erts-6.0,
kernel-3.0, mnesia-4.12, runtime_tools-1.8.14, stdlib-2.5
---------------------------------------------------------------------
--- ssh-4.11 --------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16750 Application(s): ssh
Removed usage of erlang:is_port/1 from the SSH
implementation.
OTP-17051 Application(s): ssh
Internal connection setup refactoring.
OTP-17140 Application(s): ssh
Refactor SSH fsm into a (hopefully) more comprehensible
set of gen_statem callback-files.
Full runtime dependencies of ssh-4.11: crypto-4.6.4, erts-9.0,
kernel-5.3, public_key-1.6.1, stdlib-3.4.1
---------------------------------------------------------------------
--- ssl-10.3 --------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16974 Application(s): ssl
*** POTENTIAL INCOMPATIBILITY ***
Removed ssl:ssl_accept/1,2,3 and ssl:cipher:suites/0,1
use ssl:handshake/1,2,3 and ssl:cipher_suites/2,3
instead.
OTP-17044 Application(s): ssl
Related Id(s): PR-2654
*** HIGHLIGHT ***
Make TLS handshakes in Erlang distribution concurrent.
OTP-17117 Application(s): ssl
Related Id(s): PR-2933
Randomize internal {active,n} optimization when running
Erlang distribution over TLS to spread RAM/CPU spike
that may occur when starting up a big cluster.
Full runtime dependencies of ssl-10.3: crypto-4.2, erts-10.0,
inets-5.10.7, kernel-6.0, public_key-1.8, stdlib-3.12
---------------------------------------------------------------------
--- stdlib-3.15 -----------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-15107 Application(s): stdlib
Related Id(s): ERL-1381, PR-2813
*** POTENTIAL INCOMPATIBILITY ***
Time-outs in gen_statem with relative time 0 did not
behave quite according to the intended model. This has
now been corrected.
The correction introduces a small potential
incompatibility e.g when combining a state time-out
with inserted events, and the inserted event does a
state change in the state with the time-out. Before
this correction the state time-out could be delivered
even after the second state change, but now it is
guaranteed that a state time-out is only delivered in
the state it was started for, even in this corner case.
OTP-16865 Application(s): stdlib
Fix bugs in erl_eval concerning bitstring
comprehensions.
OTP-16905 Application(s): stdlib
File names that start with a dot (such as ".gitignore"
are now treated as file names and not extensions by
filename:extension/1 and filename:rootname/1.
OTP-16950 Application(s): stdlib
Related Id(s): ERL-1378
Fixed a bug where beam_lib:chunks/3 with the
allow_missing_chunks option would crash if a named
chunk was missing.
OTP-17077 Application(s): compiler, erts, stdlib
Related Id(s): ERL-1431, PR-2903, PR-2905, PR-2906
A floating point zero (0.0) can be both positive (+0.0)
and negative (-0.0). Multiple bugs in the compiler,
runtime system, and STDLIB have been fixed to ensure
that the minus sign on 0.0 is not lost.
OTP-17118 Application(s): compiler, stdlib
Related Id(s): PR-2825
Eliminated a Dialyzer crashed when the -MMD option is
used to generate a dependency file and a BEAM file a
the same time.
OTP-17122 Application(s): erl_docgen, stdlib
Fixed bug in shell_docs and erl_docgen that interpreted
em tags as strong.
OTP-17133 Application(s): stdlib
On Solaris, the math:acos/1 and math:asin/1 functions
would not fail for arguments outside the valid domain.
--- Improvements and New Features ---
OTP-14646 Application(s): stdlib
Related Id(s): PR-2920
In the rand module it is now possible to seed the
default algorithm using an algorithm alias: default.
Generating pseudo random binaries has been implemented
with rand:bytes/1 and rand:bytes_s/2.
OTP-14647 Application(s): stdlib
Related Id(s): PR-2910
New functions have been added to the proplists module:
to_map/1,2 and from_map/1.
OTP-14650 Application(s): stdlib
Related Id(s): PR-2850
New functions have been added to the queue module:
all/2, any/2, delete/2, delete_r/2, delete_with/2, and
delete_with_r/2.
OTP-14793 Application(s): stdlib
Related Id(s): PR-2791
New function have been added to the queue module:
fold/2 and filtermap/2.
OTP-16678 Application(s): erts, stdlib, syntax_tools, tools
Related Id(s): PR-2627
Support for handling abstract code created before OTP
R15 has been dropped.
OTP-16686 Application(s): debugger, erts, kernel, stdlib
*** HIGHLIGHT ***
Extended error information for failing BIF calls as
proposed in EEP 54 has been implemented.
When a BIF call from the Erlang shell fails, more
information about which argument or arguments that were
in error will be printed. The same extended error
information will by proc_lib, common_test, and qlc when
BIF calls fail.
For applications that wish to provide the same extended
error information, there are new functions
erl_error:format_exception/3 and
erl_error:format_exception/4.
There is a new error/3 BIF that allows applications or
libraries to provide extended error information in the
same way for their own exceptions.
OTP-16718 Application(s): erts, kernel, stdlib
Related Id(s): PR-2735
*** HIGHLIGHT ***
Process aliases as outlined by EEP 53 has been
introduced. Process aliases is introduced in order to
provide a lightweight mechanism that can prevent late
replies after timeout or connection loss. For more
information, see EEP 53 and the documentation of the
new alias/1 BIF and the new options to the monitor/3
BIF.
The call operation in the framework used by gen_server,
gen_statem, and gen_event has been updated to utilize
alias in order to prevent late responses. The
gen_statem behavior still use a proxy process in the
distributed case, since it has always prevented late
replies and aliases wont work against pre OTP 24 nodes.
The proxy process can be removed in OTP 26.
The alias feature also made it possible to introduce
new functions similar to the erpc:receive_response()
function in the gen behaviors, so the new functions
gen_server:receive_response(),
gen_statem:receive_response(),
gen_event:receive_response() have also been introduced.
OTP-16910 Application(s): stdlib
Related Id(s): PR-2771
Improved documentation about exit signals emitted when
a gen_server terminates.
OTP-16936 Application(s): erts, stdlib
Related Id(s): ERL-1367
New functions have been added to the maps module:
merge_with/3, intersect/2, intersect_with/3,
filtermap/2, from_keys/2, and maps:foreach/2.
maps:merge_with/3 is the same as merge/2 but takes an
extra fun that is used to combine items with the same
key.
maps:intersect/2 computes the intersection of two maps.
maps:intersect_with/3 is the same as intersect/2 but
takes an extra fun that is used to combine intersecting
items.
maps:filtermap/2 allows filtering and mapping of a map
in a single pass.
maps:from_keys/2 constructs a map from a list of keys
and a single value and can be used to to optimize sets
operations such as from_list/1, filter/2,
intersection/2, and subtract/2.
maps:foreach/2 allows iteration over a map without
returning any value.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-16971 Application(s): stdlib
*** POTENTIAL INCOMPATIBILITY ***
The filename:src/1 function which was deprecated in OTP
20 has been removed. Use filelib:find_source/1,3
instead.
OTP-16980 Application(s): erts, stdlib
Related Id(s): ERL-1308
The pretty printer for floating point number have been
changed to make it easier to see if the integer part of
the number has been rounded. After the change the the
digit that may have been rounded always appears last or
just before the exponent character (e or E). This is
accomplished by always printing the number using
scientific notation if it is so large that the integer
part could be rounded.
OTP-17005 Application(s): erl_interface, erts, jinterface,
kernel, stdlib
Related Id(s): OTP-16718
Accept references up to a size of 160-bits from remote
nodes. This is the first step in an upgrade path toward
using references up to 160-bits in a future OTP
release.
OTP-17024 Application(s): stdlib
Add option location to erl_parse:abstract/2.
OTP-17057 Application(s): erts, stdlib
All long running functions in the maps API are now
yielding. In previous releases the functions
maps:from_list/1, maps:keys/1 and maps:values/1 did not
yield. This could cause unfair scheduling of processes.
OTP-17059 Application(s): stdlib
Related Id(s): PR-2864
The sets module now has an optional map-based
implementation, as described in EEP 50.
To use this implementation, pass the {version,2} option
to sets:new/1 or sets:from_list/2.
OTP-17120 Application(s): stdlib
Added shell_docs:supported_tags/0. This function can be
used to retrieve the tags currently supported by
shell_docs.
OTP-17121 Application(s): stdlib
The application/erlang+html documentation storage
format used by shell_docs has been updated to include
the tags b, strong, h4, h5 and h6.
OTP-17171 Application(s): stdlib
Related Id(s): PR-3011
Improved explanation of {continue,Continue} in
Module:init/1 of the gen_server documentation.
OTP-17175 Application(s): stdlib
The erl_eval module now accepts a map for keeping track
of bindings. Using an orddict for bindings will still
work.
OTP-17199 Application(s): stdlib
Related Id(s): PR-2658
Documented epp:scan_erl_form/1 and added
epp:scan_file/2.
OTP-17210 Application(s): stdlib
The standard floating point printing algorithm used by
the io and io_lib modules has been changed from the
algorithm described in [1] to the Ryu algorithm [2].
This gives a significant speed improvement for the
printing of most floating point numbers and a small
memory consumption improvement.
[1]: Robert G. Burger and R. Kent Dybvig. 1996.
Printing floating-point numbers quickly and accurately.
In Proceedings of the ACM SIGPLAN 1996 conference on
Programming language design and implementation (PLDI
'96). Association for Computing Machinery, New York,
NY, USA, 108–116.
DOI:https://doi.org/10.1145/231379.231397
[2]: Ulf Adams. 2018. Ryū: fast float-to-string
conversion. In Proceedings of the 39th ACM SIGPLAN
Conference on Programming Language Design and
Implementation (PLDI 2018). Association for Computing
Machinery, New York, NY, USA, 270–282.
DOI:https://doi.org/10.1145/3192366.3192369
Thanks to Thomas Depierre
Full runtime dependencies of stdlib-3.15: compiler-5.0, crypto-3.3,
erts-12.0, kernel-7.0, sasl-3.0
---------------------------------------------------------------------
--- syntax_tools-2.5 ------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-16678 Application(s): erts, stdlib, syntax_tools, tools
Related Id(s): PR-2627
Support for handling abstract code created before OTP
R15 has been dropped.
OTP-17180 Application(s): syntax_tools
The igor and erl_tidy modules have been the removed and
are now maintained by their original author Richard
Carlsson. They can be found at github.com/richcarl/igor
and github.com/richcarl/erl_tidy, respectively.
Full runtime dependencies of syntax_tools-2.5: compiler-7.0,
erts-9.0, kernel-5.0, stdlib-3.4
---------------------------------------------------------------------
--- tools-3.5 -------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17162 Application(s): tools
Related Id(s): elixir-lang/elixir#10666
cover would crash when compiling a module having an
exported function named clauses.
--- Improvements and New Features ---
OTP-16678 Application(s): erts, stdlib, syntax_tools, tools
Related Id(s): PR-2627
Support for handling abstract code created before OTP
R15 has been dropped.
OTP-16957 Application(s): parsetools, tools
Add types and specifications for documentation.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
Full runtime dependencies of tools-3.5: compiler-5.0, erts-11.0,
erts-9.1, kernel-5.4, runtime_tools-1.8.14, stdlib-3.4
---------------------------------------------------------------------
--- wx-2.0 ----------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17105 Application(s): crypto, erts, odbc, wx
Related Id(s): PR-2872
Fix compiler warnings produced by the clang compiler.
--- Improvements and New Features ---
OTP-16800 Application(s): wx
*** HIGHLIGHT ***
The application has been completely rewritten in order
to use wxWidgets version 3 as its base.
Add basic documentation generated from the wxWidgets
project.
OTP-16963 Application(s): common_test, compiler, dialyzer,
erl_interface, erts, kernel, runtime_tools, sasl,
stdlib, tools, wx
*** POTENTIAL INCOMPATIBILITY ***
The experimental HiPE application has been removed,
together with all related functionality in other
applications.
OTP-17213 Application(s): wx
Related Id(s): PR-3027
*** HIGHLIGHT ***
Added support for wxWebView.
OTP-17219 Application(s): wx
Related Id(s): OTP-16800
*** POTENTIAL INCOMPATIBILITY ***
Due to the support of the new backend versions some API
incompatibilities have been introduced. Examples of
changes are:
wxWindowDC default creators have been removed
wxClientDC default creators have been removed
wxPaintDC default creators have been removed
wxWindow:setVirtualSizeHints() has been deprecated in
wxWidgets and removed
wxWindow:makeModal() has been deprecated in wxWidgets
and removed
wxToolBar:add/insertTool without label have been
deprecated in wxWidgets and removed
wxStyledTextCtrl some functions have changed arguments
from boolean to int
wxSizerItem:new() Some arguments have become options
Removed deprecated wxSizerItem:setWindow() use
assignWindow()
Removed deprecated wxSizerItem:setSpacer() use
assignSpacer()
Removed deprecated wxSizerItem:setSpacer() use
assignSpacer()
Removed deprecated wxSizerItem:setSizer() use
assignSizer()
wxMenu append/insert/prepend have changed return value
and lost IsCheckable argument
wxListCtrl:setItem/4 changed return value
wxImage:convertToGreyscale() options have changed
wxGridSizer:wxGridSizer() options have changed
wxGrid API have many changes
wxGraphicsRenderer:create*GradientBrush() uses
GradientStops now
wxGraphicsRenderer:createPen() have been removed
wxGraphicsRenderer:create*GradientBrush() uses
GradientStops now
wxGLCanvas API is incompatible
wxFlexGridSizer:wxFlexGridSizer() options have changed
wxDisplay:new() options have changed
wxCalendarDateAttr:new(ColText [,OptList]) have been
removed
wxBitmapButton:set/getBitmapSelected() have been
removed
Full runtime dependencies of wx-2.0: erts-6.0, kernel-3.0, stdlib-2.0
---------------------------------------------------------------------
--- xmerl-1.4 -------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17123 Application(s): asn1, compiler, et, xmerl
The compiler will now emit warnings when (previously
bound) underscore-prefixed variables are matched.
Full runtime dependencies of xmerl-1.4: erts-6.0, kernel-3.0,
stdlib-2.5
---------------------------------------------------------------------
--- Thanks to -------------------------------------------------------
---------------------------------------------------------------------
Alexander Clouter, Andrew Shymanel, Bruce Yinhe, Bryan Paxton, Cheng
Zhe, Erlend Hamberg, Filipe Cristovao, Frej Drejhammar, Henrik
Lagebrand, Jesper Eskilson, José Valim, Jérôme de Bretagne,
Linus.yuan, Luca Favatella, Luis Rascao, Luke Bakken, Maria-12648430,
Mariano Guerra, Mattias Hansson, Maxim Fedorov, Michał Muskała,
Mikael Pettersson, Paulo F. Oliveira, Philip Kuryloski, Philipp Klaus
Krause, Pierre Allix, Radek Szymczyszyn, Richard Carlsson, Ruud
Kamphuis, Stavros Aronis, Taras Halturin, Thomas Depierre, Tianon
Gravi, Viktor Söderqvist, Wojtek Mach, lagebr, vans163, yfractal,
Łukasz Niemier
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
